/*
Copyright ( c ) 2004 , 2011 , Oracle and / or its affiliates .
Copyright ( c ) 2017 , Monty Program Ab .
This program is free software ; you can redistribute it and / or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation ; version 2 of the License .
This program is distributed in the hope that it will be useful ,
but WITHOUT ANY WARRANTY ; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
GNU General Public License for more details .
You should have received a copy of the GNU General Public License
along with this program ; if not , write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
/*
This is a private header of sql - common library , containing
declarations for my_time . c
*/
#ifndef _my_time_h_
#define _my_time_h_
#include "mysql_time.h"
#include "my_decimal_limits.h"
C_MODE_START
extern MYSQL_PLUGIN_IMPORT ulonglong log_10_int[20 ];
extern uchar days_in_month[];
#if SIZEOF_VOIDP == 4
/* 32 bit system, using old timestamp */
#define MY_TIME_T_MAX LONG_MAX
#define MY_TIME_T_MIN LONG_MIN
#define TIMESTAMP_MAX_YEAR 2038
#define TIMESTAMP_MAX_MONTH 1
#define TIMESTAMP_MAX_DAY 19
#define TIMESTAMP_MAX_VALUE INT_MAX32
#define TIMESTAMP_MIN_VALUE 0
#else
/* 64 bit system. Use 4 byte unsigned timestamp */
#define MY_TIME_T_MAX ((longlong) UINT_MAX32)
#define MY_TIME_T_MIN 0
#define TIMESTAMP_MAX_YEAR 2106
#define TIMESTAMP_MIN_VALUE 0
#define TIMESTAMP_MAX_VALUE ((longlong) UINT_MAX32)
#define TIMESTAMP_MAX_MONTH 2
#define TIMESTAMP_MAX_DAY 7
#endif /* SIZEOF_VOIDP */
#define TIMESTAMP_MIN_YEAR (1900 + YY_PART_YEAR - 1 )
/* two-digit years < this are 20..; >= this are 19.. */
#define YY_PART_YEAR 70
/*
check for valid times only if the range of time_t is greater than
the range of my_time_t
*/
#if SIZEOF_TIME_T > 4 || defined (TIME_T_UNSIGNED)
# define IS_TIME_T_VALID_FOR_TIMESTAMP(x) \
((ulonglong) (x) <= TIMESTAMP_MAX_VALUE && \
((x) >= TIMESTAMP_MIN_VALUE)
#else
# define IS_TIME_T_VALID_FOR_TIMESTAMP(x) \
((x) >= TIMESTAMP_MIN_VALUE)
#endif
/* Flags to str_to_datetime */
#define C_TIME_NO_ZERO_IN_DATE (1 UL << 23 ) /* == MODE_NO_ZERO_IN_DATE */
#define C_TIME_NO_ZERO_DATE (1 UL << 24 ) /* == MODE_NO_ZERO_DATE */
#define C_TIME_INVALID_DATES (1 UL << 25 ) /* == MODE_INVALID_DATES */
#define MYSQL_TIME_WARN_TRUNCATED 1 U
#define MYSQL_TIME_WARN_OUT_OF_RANGE 2 U
#define MYSQL_TIME_WARN_EDOM 4 U
#define MYSQL_TIME_WARN_ZERO_DATE 8 U
#define MYSQL_TIME_NOTE_TRUNCATED 16 U
#define MYSQL_TIME_WARN_WARNINGS (MYSQL_TIME_WARN_TRUNCATED|\
MYSQL_TIME_WARN_OUT_OF_RANGE|\
MYSQL_TIME_WARN_EDOM|\
MYSQL_TIME_WARN_ZERO_DATE)
#define MYSQL_TIME_WARN_NOTES (MYSQL_TIME_NOTE_TRUNCATED)
#define MYSQL_TIME_WARN_HAVE_WARNINGS(x) MY_TEST((x) & MYSQL_TIME_WARN_WARNINGS)
#define MYSQL_TIME_WARN_HAVE_NOTES(x) MY_TEST((x) & MYSQL_TIME_WARN_NOTES)
/* Useful constants */
#define SECONDS_IN_24H 86400 L
/* Limits for the INTERVAL data type */
/* Number of hours between '0001-01-01 00h' and '9999-12-31 23h' */
#define TIME_MAX_INTERVAL_HOUR 87649415
#define TIME_MAX_INTERVAL_HOUR_CHAR_LENGTH 8
/* Number of full days between '0001-01-01' and '9999-12-31'*/
#define TIME_MAX_INTERVAL_DAY 3652058 /*87649415/24*/
#define TIME_MAX_INTERVAL_DAY_CHAR_LENGTH 7
/* Limits for the TIME data type */
#define TIME_MAX_HOUR 838
#define TIME_MAX_MINUTE 59
#define TIME_MAX_SECOND 59
#define TIME_MAX_SECOND_PART 999999
#define TIME_SECOND_PART_FACTOR (TIME_MAX_SECOND_PART+1 )
#define TIME_SECOND_PART_DIGITS 6
#define TIME_MAX_VALUE (TIME_MAX_HOUR*10000 + TIME_MAX_MINUTE*100 + TIME_MAX_SECOND)
#define TIME_MAX_VALUE_SECONDS (TIME_MAX_HOUR * 3600 L + \
TIME_MAX_MINUTE * 60 L + TIME_MAX_SECOND)
/*
Structure to return status from
str_to_datetime ( ) , str_to_time ( ) .
*/
typedef struct st_mysql_time_status
{
int warnings;
uint precision;
uint nanoseconds;
} MYSQL_TIME_STATUS;
static inline void my_time_status_init(MYSQL_TIME_STATUS *status)
{
status->warnings= 0 ;
status->precision= 0 ;
status->nanoseconds= 0 ;
}
struct my_timeval
{
longlong tv_sec;
ulong tv_usec;
};
my_bool check_date(const MYSQL_TIME *ltime, my_bool not_zero_date,
ulonglong flags, int *was_cut);
my_bool str_to_DDhhmmssff(const char *str, size_t length, MYSQL_TIME *l_time,
ulong max_hour, MYSQL_TIME_STATUS *status);
my_bool str_to_datetime_or_date_or_time(const char *str, size_t length,
MYSQL_TIME *to, ulonglong flag,
MYSQL_TIME_STATUS *status,
ulong time_max_hour,
ulong time_err_hour);
my_bool
str_to_datetime_or_date_or_interval_hhmmssff(const char *str, size_t length,
MYSQL_TIME *to, ulonglong flag,
MYSQL_TIME_STATUS *status,
ulong time_max_hour,
ulong time_err_hour);
my_bool
str_to_datetime_or_date_or_interval_day(const char *str, size_t length,
MYSQL_TIME *to, ulonglong flag,
MYSQL_TIME_STATUS *status,
ulong time_max_hour,
ulong time_err_hour);
my_bool str_to_datetime_or_date(const char *str, size_t length, MYSQL_TIME *to,
ulonglong flags, MYSQL_TIME_STATUS *status);
longlong number_to_datetime_or_date(longlong nr, ulong sec_part,
MYSQL_TIME *time_res,
ulonglong flags, int *was_cut);
int number_to_time_only(my_bool neg, ulonglong nr, ulong sec_part,
ulong max_hour, MYSQL_TIME *to, int *was_cut);
ulonglong TIME_to_ulonglong_datetime(const MYSQL_TIME *);
ulonglong TIME_to_ulonglong_date(const MYSQL_TIME *);
ulonglong TIME_to_ulonglong_time(const MYSQL_TIME *);
ulonglong TIME_to_ulonglong(const MYSQL_TIME *);
double TIME_to_double(const MYSQL_TIME *my_time);
int check_time_range(struct st_mysql_time *my_time, uint dec, int *warning);
my_bool check_datetime_range(const MYSQL_TIME *ltime);
/*
Accurate only for the past couple of centuries .
Also works with 2 digit year 01 - 99 ( 1971 - 2069 )
Year 0 is ignored as MariaDB uses year 0 as ' not specifed ' . This
matches how things how leap year was calculated in calc_days_in_year ( ) .
*/
#define isleap(y) (((y) & 3 ) == 0 && (((y) % 100 ) != 0 || (((y) % 400 ) == 0 && y != 0 )))
long calc_daynr(uint year,uint month,uint day);
uint calc_days_in_year(uint year);
uint calc_days_in_month(uint year, uint month);
uint year_2000_handling(uint year);
void my_init_time(void );
/*
Function to check sanity of a TIMESTAMP value
DESCRIPTION
Check if a given MYSQL_TIME value fits in TIMESTAMP range .
This function doesn ' t make precise check , but rather a rough
estimate .
RETURN VALUES
TRUE The value seems sane
FALSE The MYSQL_TIME value is definitely out of range
*/
static inline my_bool validate_timestamp_range(const MYSQL_TIME *t)
{
if ((t->year > TIMESTAMP_MAX_YEAR || t->year < TIMESTAMP_MIN_YEAR) ||
(t->year == TIMESTAMP_MIN_YEAR && (t->month < 12 || t->day < 31 )))
return FALSE ;
return TRUE ;
}
/* Can't include mysqld_error.h, it needs mysys to build, thus hardcode 2 error values here. */
#ifndef ER_WARN_DATA_OUT_OF_RANGE
#define ER_WARN_DATA_OUT_OF_RANGE 1264
#define ER_WARN_INVALID_TIMESTAMP 1299
#endif
my_time_t
my_system_gmt_sec(const MYSQL_TIME *t, long *my_timezone, uint *error_code);
void set_zero_time(MYSQL_TIME *tm, enum enum_mysql_timestamp_type time_type);
/*
Required buffer length for my_time_to_str , my_date_to_str ,
my_datetime_to_str and TIME_to_string functions . Note , that the
caller is still responsible to check that given TIME structure
has values in valid ranges , otherwise size of the buffer could
be not enough . We also rely on the fact that even wrong values
sent using binary protocol fit in this buffer .
*/
#define MAX_DATE_STRING_REP_LENGTH 30
#define AUTO_SEC_PART_DIGITS DECIMAL_NOT_SPECIFIED
int my_interval_DDhhmmssff_to_str(const MYSQL_TIME *, char *to, uint digits);
int my_time_to_str(const MYSQL_TIME *l_time, char *to, uint digits);
int my_date_to_str(const MYSQL_TIME *l_time, char *to);
int my_datetime_to_str(const MYSQL_TIME *l_time, char *to, uint digits);
int my_TIME_to_str(const MYSQL_TIME *l_time, char *to, uint digits);
int my_timeval_to_str(const struct my_timeval *tm, char *to, uint dec);
static inline longlong sec_part_shift(longlong second_part, uint digits)
{
return second_part / (longlong)log_10_int[TIME_SECOND_PART_DIGITS - digits];
}
static inline longlong sec_part_unshift(longlong second_part, uint digits)
{
return second_part * (longlong)log_10_int[TIME_SECOND_PART_DIGITS - digits];
}
/* Date/time rounding and truncation functions */
static inline long my_time_fraction_remainder(long nr, uint decimals)
{
return nr % (long ) log_10_int[TIME_SECOND_PART_DIGITS - decimals];
}
static inline void my_datetime_trunc(MYSQL_TIME *ltime, uint decimals)
{
ltime->second_part-= my_time_fraction_remainder(ltime->second_part, decimals);
}
static inline void my_time_trunc(MYSQL_TIME *ltime, uint decimals)
{
ltime->second_part-= my_time_fraction_remainder(ltime->second_part, decimals);
if (!ltime->second_part && ltime->neg &&
!ltime->hour && !ltime->minute && !ltime->second)
ltime->neg= FALSE ;
}
#ifdef _WIN32
#define suseconds_t long
#endif
#define hrtime_to_my_time(X) ((my_time_t)hrtime_to_time(X))
/*
Available interval types used in any statement .
' interval_type ' must be sorted so that simple intervals comes first ,
ie year , quarter , month , week , day , hour , etc . The order based on
interval size is also important and the intervals should be kept in a
large to smaller order . ( get_interval_value ( ) depends on this )
Note : If you change the order of elements in this enum you should fix
order of elements in ' interval_type_to_name ' and ' interval_names '
arrays
See also interval_type_to_name , get_interval_value , interval_names , append_interval
*/
enum interval_type
{
INTERVAL_YEAR, INTERVAL_QUARTER, INTERVAL_MONTH, INTERVAL_WEEK, INTERVAL_DAY,
INTERVAL_HOUR, INTERVAL_MINUTE, INTERVAL_SECOND, INTERVAL_MICROSECOND,
INTERVAL_YEAR_MONTH, INTERVAL_DAY_HOUR, INTERVAL_DAY_MINUTE,
INTERVAL_DAY_SECOND, INTERVAL_HOUR_MINUTE, INTERVAL_HOUR_SECOND,
INTERVAL_MINUTE_SECOND, INTERVAL_DAY_MICROSECOND, INTERVAL_HOUR_MICROSECOND,
INTERVAL_MINUTE_MICROSECOND, INTERVAL_SECOND_MICROSECOND, INTERVAL_LAST
};
C_MODE_END
#endif /* _my_time_h_ */
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